Seat Control Module - Sensor Fault
There's a problem with the seat control module's sensor input.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The seat control module isn't getting the correct information from the sensors that track the position and function of the seats.
What the computer is actually seeing
The control module expects a voltage signal from the seat position sensors. It looks for specific voltage ranges (typically 0.5-4.5 volts) based on the seat's position and movement. If it sees a signal outside of this range, or no signal at all, it triggers the fault code.
What a healthy reading looks like
Expected voltage from sensor inputs should range between 0.5V to 4.5V; common dead positions could show 0V or over 5V.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors going to the seat control module and the sensors for any visible damage or corrosion. Decision: If wiring is damaged, repair it; if not, proceed to step 2.
- 22. Check the voltage at the seat position sensor connector while moving the seat. Ensure the voltage is between 0.5V and 4.5V. Decision: If the voltage is out of this range, replace the sensor; if it's within range, go to step 3.
- 33. Test the seat control module by using a scan tool to command seat adjustments. If it responds, the module is likely good. Decision: If the module does not respond, replace the seat control module.
Common causes
- Wiring issues (shorts, opens)
- Faulty seat position sensor
- Bad seat control module
- Corrosion at connector terminals
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code on?
Yes, but the seat adjustment feature may not work properly.
Will this fault come back after I fix it?
If the repair is done correctly, it should not come back.
Why is this code paired with others like B1235?
Codes like B1235 can indicate different faults in the same system, often related to different sensors or circuitry.
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